OpenDCL is an interactive replacement to DCL (Dialog Control Language) for developing dialog boxes within AutoCAD using AutoLISP. OpenDCL is based on ObjectDCL, a commercial application by 3rd day Software that was released as open source under the GNU General Public License in 2006 by owner Chad Wanless. OpenDCL represents the combined work of the original authors and individuals who have contributed to the open source project on SourceForge at:http://www.sourceforge.net/projects/opendcl